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Help CenterFor Marine Piping Systems: Cast Iron Globe Check Valve DN50-DN200, PN16, Flanged, LR ABS Certified - Ideal for Ballast and Firefighting Lines
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Shanghai Zhibang Valve Manufacture Co., Ltd. has been a reliable manufacturer of high-quality marine valves since 2016. Our Cast Iron Globe Check Valve (DN50–DN200, PN16, Flanged) is specially engineered for marine piping systems, including ballast and firefighting lines. With an annual export value of US$1–1.5 million and serving markets across North America, Europe, Southeast Asia, and more, we understand global marine standards. This valve carries LR ABS certification and is built to deliver dependable backflow prevention under demanding sea conditions, ensuring the safety and efficiency of your vessel’s fluid systems.
Below you will find a comprehensive overview of the product’s features, technical specifications, benefits, and answers to frequently asked questions.
Product Features & Advantages
- Robust Cast Iron Construction: The body is made of high-grade cast iron, offering excellent strength, corrosion resistance in marine environments, and long service life.
- Globe Check Valve Design: Combines the functions of a globe valve and a check valve in one unit, allowing flow control and automatic backflow prevention without separate components.
- PN16 Pressure Rating: Rated for up to 16 bar (approx. 232 psi), suitable for typical marine ballast and firefighting system pressures.
- Flanged Connections: Easy to install and maintain; flanges conform to international standards for leak-proof sealing and compatibility with standard piping.
- LR ABS Certified: Approved by Lloyd’s Register and American Bureau of Shipping, ensuring compliance with marine classification society requirements.
- Temperature Range: Designed for seawater and fresh water applications from -10°C to 120°C (optional up to 200°C upon request).
- Low Maintenance: Simple internal design with accessible seat and disc for quick inspection and replacement if needed.
Technical Specifications
| Size Range | DN50, DN65, DN80, DN100, DN125, DN150, DN200 |
| Pressure Rating | PN16 (16 bar / 1.6 MPa) |
| Flange Standard | EN 1092-2 / ISO 7005-2 (also available with ANSI 125/150 upon request) |
| Working Medium | Seawater, fresh water, firefighting foam concentrates (non‑corrosive), compatible with ballast & firefighting lines |
| Temperature Range | -10°C to +120°C (higher temperature options available) |
| End Connection | Flanged (RF or FF) |
| Face-to-Face Dimension | Per EN 558-1 (series 1) or DIN 3202 F1/F2 |
| Weight (approx.) | DN50: 8 kg; DN100: 18 kg; DN200: 42 kg |
Detailed Benefits for Marine Applications
- Dual Function Saves Space & Cost: Integrating both globe and check functions eliminates the need for two separate valves, reducing installation complexity and total valve count on board.
- Reliable Backflow Prevention: The spring-loaded or gravity-type disc ensures immediate closure upon flow reversal, protecting pumps and piping from water hammer and contamination.
- Smooth Flow Control: The globe-type throttling profile allows partial opening for flow regulation, ideal for balancing ballast tanks or adjusting firefighting main lines.
- Corrosion Resistance: Cast iron with internal epoxy coating (optional) withstands the corrosive effects of seawater; external marine-grade paint protects against salty air.
- Certified for Marine Use: LR ABS certification gives shipyards and operators confidence that the valve meets stringent classification society standards for safety and reliability.
- Easy Installation & Maintenance: Flanged ends simplify alignment with existing piping; the bonnet design allows internal access without removing the valve from the line.
Our factory in Shanghai has been manufacturing marine valves for over 8 years, exporting to more than 10 global markets. In 2023 alone, we supplied over 5,000 globe check valves to shipbuilders in Europe and Southeast Asia. Every valve is pressure-tested at 1.5× PN (24 bar) before shipment, and we provide a 12-month warranty against manufacturing defects. With ISO9001 certified quality management and LR ABS type approval, you can trust Shanghai Zhibang Valve to deliver consistent performance for your ballast and firefighting systems.
Contact our sales team today to request a quotation, technical drawing, or sample. We offer flexible packaging (plywood cases or crates) and can arrange delivery from Shanghai, Guangzhou, Hong Kong, or Beijing ports. Upgrade your marine piping system with a valve that meets the highest industry standards.
Frequently Asked Questions (FAQ)
1. What does LR ABS certification mean for this valve?
LR (Lloyd’s Register) and ABS (American Bureau of Shipping) are two major marine classification societies. Their approval confirms that the valve design, material, and manufacturing process meet stringent safety and reliability standards required by international maritime regulations for ballast and firefighting systems.
2. Can this valve be used for other fluids besides seawater and fresh water?
It is suitable for non-corrosive fluids such as firefighting foam concentrates and treated water. For aggressive chemicals or high‑temperature steam, please consult our engineering team for a customized material upgrade (e.g., bronze or stainless steel trim).
3. What is the maximum working temperature?
Standard design is -10°C to +120°C. For applications up to 200°C, we can supply with high-temperature gaskets and seals upon request. Please specify your temperature requirement when ordering.
4. Do you offer other pressure ratings like PN10 or PN25?
Yes, while PN16 is our standard, we can manufacture the same valve in PN10 and PN25 (or Class 125/150) with appropriate modifications to the body thickness and flange dimensions. Minimum order quantities may apply.
5. Is the valve suitable for horizontal and vertical pipe installations?
Yes, the globe check valve can be installed in any orientation, but we recommend mounting with the stem vertical for optimal flow performance and easier maintenance. For vertical lines, ensure correct flow direction (upward or downward) based on disc weight design.
6. What is the typical lead time?
For standard sizes (DN50–DN150), lead time is 15–25 working days. Larger sizes (DN200) may require 25–30 working days. Rush orders can be expedited with our production team.
7. How are the valves packed for export?
Each valve is individually wrapped in plastic, then packed in sturdy plywood crates suitable for sea freight. Flanges are protected with plastic caps. We also offer custom labeling and barcode scanning for inventory management.
8. Do you provide installation and maintenance instructions?
Yes, each shipment includes a manual with detailed instructions on installation, operation, and maintenance. We also offer free technical support via email or video call.
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